Windows Environment Variables in VB

Contributed by shabbir () On 24th November, 2004

This is an article on Windows Environment Variables in VB in Visual Basic [VB].

Visual Basic 6 provides a function called Environ through which you can get all the environment variables available. It takes string parameter which is name of the Environment variable and returns its value.

The Valid Environment strings are

ALLUSERSPROFILE
APPDATA
CI_HOLOS_CLI
CLIENTNAME
CommonProgramFiles
COMPUTERNAME
ComSpec
FP_NO_HOST_CHECK
HOMEDRIVE
HOMEPATH
include
JAVA_HOME
lib
LOGONSERVER
MSDevDir
NUMBER_OF_PROCESSORS
OS
Path
PATHEXT
PROCESSOR_ARCHITECTURE
PROCESSOR_IDENTIFIER
PROCESSOR_LEVEL
PROCESSOR_REVISION
ProgramFiles
SESSIONNAME
SystemDrive
SystemRoot
TEMP
TMP
USERDNSDOMAIN
USERDOMAIN
USERNAME
USERPROFILE
windir

The following code will help you get all the Environment variables on your system

Code: VB

Dim i as Integer
  Text1.Text = ""
  i = 1
  While Environ$(i) <> ""
    Text1.Text = Text1.Text + Mid(Environ$(i), 1, InStr(1, Environ(i), "=") - 1) + vbNewLine
    i = i + 1
  Wend